What is the standard amount of spirits (40% ABV) considered equal to one "serving"?

One standard serving of spirits is defined as 1.5 ounces of a beverage that has an alcohol by volume (ABV) of 40%. This measurement aligns with guidelines established by health organizations and beverage regulations. It represents a moderate amount of alcohol, making it easier to maintain responsible drinking standards.

When considering the amount of pure alcohol in each option, 1.5 ounces of a 40% ABV spirit contains 0.6 ounces of pure alcohol, which is a recognized standard for servings across many contexts, such as restaurants and bars. The other options suggest either smaller or larger amounts, which do not align with the established norm of a standard serving. Adhering to this recognized measurement aids in promoting safety and moderation in beverage consumption.